When we got Reggie at 4 months, her ears were still flopping. I tried trimming them and taping them, over and over and over again because she didn't like the tape and would work it off. One ear would stand up and the other flop down. I'd look at her, point my finger and strongly tell her to get her ear up, and she would. Although, she thought that it was a game and as soon as I would turn around, down the ear would go. What was so funny, it never was the same ear. She was playing with me. Finally I gave up and at almost 7 months they both stayed up on their own. Two of the puppies we have right now were up and stayed up at 4 1/2 weeks, the other two followed at 5 weeks. On the other hand, Alphy is 7 months and still flops around unless they are cut as short as I can get them, the whole ear has to be cut, not just the upper portion, or no standee up.